WebUI: Improve hotkeys

PR #18326.
Fixes #18325.
Fixes #14033.

src/webui/www/private/scripts/client.js

@@ -1350,14 +1350,26 @@ new Keyboard({
     defaultEventType: 'keydown',
     events: {
         'ctrl+a': function(event) {
+            if (event.target.nodeName == "INPUT" || event.target.nodeName == "TEXTAREA")
+                return;
+            if (event.target.isContentEditable)
+                return;
             torrentsTable.selectAll();
             event.preventDefault();
         },
         'delete': function(event) {
+            if (event.target.nodeName == "INPUT" || event.target.nodeName == "TEXTAREA")
+                return;
+            if (event.target.isContentEditable)
+                return;
             deleteFN();
             event.preventDefault();
         },
         'shift+delete': (event) => {
+            if (event.target.nodeName == "INPUT" || event.target.nodeName == "TEXTAREA")
+                return;
+            if (event.target.isContentEditable)
+                return;
             deleteFN(true);
             event.preventDefault();
         }